Review on Undergravel Filteration Bottom Circular Aquarium by Heather Collins

So I bought this because I couldn't find an in-ground filter that would fit my 30 gallon height. So far this has worked great! I have a few Bettas in my aquarium (they don't like strong currents) and this has kept the suction flow to a minimum. I've never had a problem with clogging, but I wouldn't recommend it for tanks where you want to use something finer than gravel as the substrate. It can be used with different filters. **A small installation note, since the pipes are movable it's good to have a team of several people to help with the installation: one or more people hold the pipe while the other pours gravel over it** Don't have help , parts of my pipe protrude from gravel. It doesn't have to be done, and there's certainly no harm in not doing it, but there are aesthetic rewards in using a multi-person team.